Plasterer&#39;s bullnose finishing trowel



Nov. 28, 1939,.

u a m/ H. W. SEEMAN ET AL PLASTERER'S BULLNSE FINISHING TROWEL n FiledJan. 9, 1939 NVENTORS Hen/'g IM See/'nan and LoL/Is E See/77077ATTORNEY.

Patented Nov. 28, 1939 UNITEDSTATES.

PLAsrE-Riws EULLN ,osiirmsriNG Henry WL Seenaiand Louis E. Seeman,

'San Diego, Calif. i

Application, January 9, 1939, sein No. %9 920 Our invention relates .toa plasterer'siinishing trowel for nishing bullnose corners at the sidesof the frames of doors and windows in buildings or other bullnosecorners and the objects of ;our

invention are:

First, to provide a trowel that. is particularly `shaped and a handie sovides an efficient trowel for ,finishing bullnose corners around theframes of doors and windows in buildings or likebullnose corners;

Second, to provide ,a :trowel of this class that is so shaped and curvedthat it properly forms and finishes the bullnose corner, thus providingabullnose corner of this class that is substantially perfect in shape andform; v Third, to provide a finishing trowel of this class which is sobullnose corner is that it is uniform its full length; v

Fourth, to pro-vide a plasterer's bullnose finish- 'ing trowel of thisclass which is operated longitudinally along the corner without sideshifting for providing the proper form and shape of y a bullnose cornerfor around the frameiof the doors, windows or the like;

Fifth, to provide a trowel of this class which is so shaped and formedthat there isa substantially straight portion along one side only whichblends with the straight portion of the walls adjacent the bullnosecorner;

Sixth, to provide a plasterer's finishing trowel of this class in whichthe handle is so positioned relatively to the trowel that pressure isbrought to bear at the proper portion of the trowel blade to provide amaximum of perfection in the finished bullnose corner; and

Seventh, to provide a trowel: of this class which is very simple andeconomical of construction, easy to operate, eicient in its action andwhich will not readily deteriorate or getout of order.

With these and other objeots in View as will appear hereinafter, myinvention consists of certain novel features of construction,combination and arrangement of parts and portions as will be hereinafterdescribed in detail and particularly set orth in the appended claims,reference being had to the accompanying drawing and to the characters ofreference ther'eon which form a part of this applicationin which:

' Figure 1 is a top or plan View of our plasterer's bullnose finishingtrowel shown positioned on a fragmentary portion of a bullnose corneraround a window frame; Fig. 2 is a side elevational View of the trowelalone taken from the arran'ged that it 'proshaped and formed that the efinished` without variations so line 2--2 of Fig., 1' and 3 is atransverse sectional view of the trowel alone taken from the line 3- -3of Fig. 2, e

Similar characters of reference .refer to similar parts and portionsthroughout the several views of the drawing:

The bullnose corner, which is :the conventional new constructionforcorners, particularly takes the place of the frame of doors and windowsin buildings where the wood frame is eliminated at ;the outer side andreduced in size and the finish is a plaster bullnose corner as shownbest in Fig. 1 of the drawing in section by dash lines. The bullnoseportion extends from the point i to 'thepoint `2 in Fig. 1 of thedrawing, while the surface 3 is the wall space which is straight and isthe finished walls with plaster finish, so that the portion Za blends inwith the portion 3 under a straight portion of one side edge of thetrowel. The portion 4 indicates the door or window frame portion and theportion da the door or window therein, all shown by dash lines in Fig. 1of the drawing.

The trowel blade 5 `is so shaped in cross section that it is straight,at 50, for nearly onehalf the width of the blade, then it is formed ina curve-at 5b which 'extends to the edge 5c. The distance from the point5c to the straight portion 5a. is the thickness of the lath and plasterof the wall-sometimes .three-quarters of an inch and sometimes less, andthe curve of this trowel is made to, fit the different wall thicknessesoutside of the wall studding. This blade 5 is shaped as 'shown best incross section in Figs. 1 and 3 of the drawing and is made of steel andis from 11 to 12 inches in length to provide long bearing surface on thecorner and it is straight longitudinally as shown best in Fig. 2 of thedrawing. `Secured to this blade 5 right on' the curve 51). andpositioned so that the proper pressure will be produced for properlyforming the curve bullnose corner 6 is a handle i member 'I which issubstantially U shaped as shown best in Fig. 2 of' the drawing and itSecured to the blade 5 by means of two screws positioned side by 'sideat each end Ta, and lb,

The operation of our trowel is substantially as follows: The propertrowel blade is selected for the proper thickness of wall and thefinishing coat is placed on the corner with the trowel and the trowelblade is moved longitudinally only along the bullnose corner with theproper the scope of our invention, the construction,`

combination and arrangement substantially as set forth in the appendedclaims Having thus described our invention, what we claim as new anddesire to secure by Letters Patent is:

1. In a plasterer's bullnose finishing 'trowel of the class described,the eombination of a trowel blade including a relatively longlongitudinally straight blade member provided with a relatively wideportion that is transversely straight in cross section andasubstantially similar" width portion that is curvedincross section, anda handle member secured longitudinaliy of said blade with its middle inalignment with the radius of the arc of the curved portion.

2. In a plasterefs bullnose finishing trowel of the class described, thecombination of a trowel blade including a relatively long longitudinallystraight blade member provided with a relatively wide portion that istransversely straight in cross section and a substantially similar widthportion that is curved in cross section, a. handle member securedlongitudinally of said blade with its middle in alignment with theradius of the arc of the curved portion, said handle being provided withcurved portions adapted to conform to and fit the outer curved surfaceof said blade.

3. In a, plasterer s bullnose finishing trowel of the class described,the combination of a relatively long longitudinaily straight trowelblade provided with a curved portion in cross section at one side and ahandle Secured longitudinally along said blade at the outer side of thecurved portion in substantal alignment with the radius of said curve ofsaid blade.

4. In a plasterer's bullnose finishing trowel of the class described,the combination of a relatively long longitudinally straight trowelblade provided with a curved portion in cross section at one side and ahandle Secured longitudinally along said blade at the outer side of thecurved portion in substantial alignment with i the radius of said curveof said blade, said blade provided with a transversely straight portionat one side intersecting the one side of the curved portion.

HENRY W. SEEMAN. LOUIS E. SEEMAN.

